[mythtv] Ticket #1619: DVB: backend won't tune after the first channel tune

Mark Buechler mark.buechler at gmail.com
Tue Apr 11 19:43:24 UTC 2006 

Ok, I added a couple verboses to mpeg/mpegstreamdata.cpp in IsRedundant()
and in /mpeg/pmegstreamdata.h in SetVersionPAT(). As you can see below,
SetVersionPAT is only called once due to an invalid PAT. Again, this is
tuning to a different transport on the same NIT.

The ">>>>>>>>>>>>> 0 <> 0" is the verbose I added comparing the PAT
versions.

2006-04-11 15:39:55.012 DummyRec: Restart! Frames seen 12
2006-04-11 15:39:55.031 >>>>>>>>>> -1 <> 0
2006-04-11 15:39:55.032 >>>>>>>>>> -1 <> 0
2006-04-11 15:39:55.032 >>>>>>> SetVersionPAT() version == 0
2006-04-11 15:39:55.032 ProcessPAT: PAT is missing program, setting timeout
2006-04-11 15:39:55.032 SM(0)::AddFlags: Seen(PAT,) Match() Wait()
2006-04-11 15:39:55.033 >>>>>>> SetVersionPAT() version == -1
2006-04-11 15:39:55.033 Program #9475 not found in PAT!
Program Association Table
 PSIP tableID(0x0) length(25) extension(0x1af)
      version(0) current(1) section(0) last_section(0)
         tsid: 431
 programCount: 4
  program number 0 has PID 0x  10   data  0x0 0x0 0x224 0x16
  program number 9478 has PID 0x  21   data  0x37 0x6 0x224 0x33
  program number 9485 has PID 0x  21   data  0x37 0x13 0x224 0x33
  program number 9486 has PID 0x  21   data  0x37 0x14 0x224 0x33


2006-04-11 15:39:55.034 CreatePATSingleProgram()
2006-04-11 15:39:55.034 PAT in input stream
2006-04-11 15:39:55.034 Program Association Table
 PSIP tableID(0x0) length(25) extension(0x1af)
      version(0) current(1) section(0) last_section(0)
         tsid: 431
 programCount: 4
  program number 0 has PID 0x  10   data  0x0 0x0 0x224 0x16
  program number 9478 has PID 0x  21   data  0x37 0x6 0x224 0x33
  program number 9485 has PID 0x  21   data  0x37 0x13 0x224 0x33
  program number 9486 has PID 0x  21   data  0x37 0x14 0x224 0x33

2006-04-11 15:39:55.035 desired_program(9475) pid(0x0)
2006-04-11 15:39:55.035 Desired program #9475 not found in PAT.
                        Can Not create single program PAT.
2006-04-11 15:39:55.083 DummyRec: Restart! Frames seen 24
2006-04-11 15:39:55.116 DummyRec: Restart! Frames seen 36
2006-04-11 15:39:55.137 >>>>>>>>>> -1 <> 0
2006-04-11 15:39:55.138 >>>>>>>>>> -1 <> 0
2006-04-11 15:39:55.138 >>>>>>> SetVersionPAT() version == 0
2006-04-11 15:39:55.149 DummyRec: Restart! Frames seen 48
2006-04-11 15:39:55.191 DummyRec: Restart! Frames seen 60
2006-04-11 15:39:55.235 DummyRec: Restart! Frames seen 72
2006-04-11 15:39:55.240 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.343 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.393 DiSEqC(0): 1.3 Motor - Goto Angular Position -129
2006-04-11 15:39:55.411 DiSEqC(0): Sending 1.0 Command: e0 31 6e d3
2006-04-11 15:39:55.446 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.511 DiSEqC(0): Sending 1.3 Repeat Command: e0 31 6e d3
8a
2006-04-11 15:39:55.549 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.652 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.687 DummyRec: Restart! Frames seen 84
2006-04-11 15:39:55.757 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.860 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:55.963 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.066 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.169 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.191 DummyRec: Restart! Frames seen 96
2006-04-11 15:39:56.249 DiSEqC(0): 1.1 Switch (4 ports) - Port 0 - Tone ON
13V
2006-04-11 15:39:56.267 DiSEqC(0): Sending 1.0 Command: e0 10 38 f1
2006-04-11 15:39:56.272 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.354 DiSEqC(0): Sending 1.3 Repeat Command: e0 10 38 f1
0
2006-04-11 15:39:56.375 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.478 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.581 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.587 DVB#0 Old Params: freq(12647000) type(QPSK)
2006-04-11 15:39:56.587 DVB#0 New Params: freq(12369000) type(QPSK)
2006-04-11 15:39:56.746 DummyRec: Restart! Frames seen 108
2006-04-11 15:39:56.788 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.891 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:56.994 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.097 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.148 Got Key type(69) idx: 1, pid: 0
2006-04-11 15:39:57.148 Got Key type(79) idx: 1, pid: 0
2006-04-11 15:39:57.200 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.258 DummyRec: Restart! Frames seen 120
2006-04-11 15:39:57.303 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.390 dvbchannel.cpp:wait_for_backend: Status:
Signal,Carrier,FEC Stable,Sync,Lock,
2006-04-11 15:39:57.391 DVB#0 DVBChannel::Tune: Frequency tuning successful.
2006-04-11 15:39:57.391 TVRec(4): SetChannel() -- end
2006-04-11 15:39:57.406 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.509 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.560 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.663 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.766 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.819 DummyRec: Restart! Frames seen 132
2006-04-11 15:39:57.870 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:57.973 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.076 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.179 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.282 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.385 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.386 DummyRec: Restart! Frames seen 144
2006-04-11 15:39:58.488 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.591 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.694 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.797 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:58.893 DummyRec: Restart! Frames seen 156
2006-04-11 15:39:58.901 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.004 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.107 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.210 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.313 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.416 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.459 DummyRec: Restart! Frames seen 168
2006-04-11 15:39:59.519 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.570 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.673 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.776 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.879 >>>>>>>>>> 0 <> 0
2006-04-11 15:39:59.968 DummyRec: Restart! Frames seen 180
2006-04-11 15:39:59.982 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.085 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.188 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.291 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.394 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.497 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.531 DummyRec: Restart! Frames seen 192
2006-04-11 15:40:00.600 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.704 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.808 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:00.911 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.014 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.094 DummyRec: Restart! Frames seen 204
2006-04-11 15:40:01.117 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.220 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.324 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.428 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.479 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.583 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.610 DummyRec: Restart! Frames seen 216
2006-04-11 15:40:01.688 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.791 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.896 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:01.999 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.103 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.205 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.214 DummyRec: Restart! Frames seen 228
2006-04-11 15:40:02.307 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.409 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.432 Got Key type(79) idx: 1, pid: 0
2006-04-11 15:40:02.511 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.613 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.715 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.720 DummyRec: Restart! Frames seen 240
2006-04-11 15:40:02.817 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:02.919 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.021 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.123 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.225 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.272 DummyRec: Restart! Frames seen 252
2006-04-11 15:40:03.327 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.429 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.531 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.633 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.735 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.824 DummyRec: Restart! Frames seen 264
2006-04-11 15:40:03.837 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.939 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:03.989 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.091 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.193 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.295 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.326 DummyRec: Restart! Frames seen 276
2006-04-11 15:40:04.397 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.499 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.601 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.703 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.805 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:04.878 DummyRec: Restart! Frames seen 288
2006-04-11 15:40:04.907 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.009 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.112 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.213 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.315 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.376 DummyRec: Restart! Frames seen 300
2006-04-11 15:40:05.391 DiSEqC(0): 1.3 Motor - Goto Angular Position -129
2006-04-11 15:40:05.408 DiSEqC(0): Sending 1.0 Command: e0 31 6e d3
2006-04-11 15:40:05.417 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.508 DiSEqC(0): Sending 1.3 Repeat Command: e0 31 6e d3
8a
2006-04-11 15:40:05.519 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.621 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.723 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.825 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:05.926 DummyRec: Restart! Frames seen 312
2006-04-11 15:40:05.927 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.029 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.131 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.233 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.240 DiSEqC(0): 1.1 Switch (4 ports) - Port 0 - Tone ON
13V
2006-04-11 15:40:06.257 DiSEqC(0): Sending 1.0 Command: e0 10 38 f1
2006-04-11 15:40:06.335 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.343 DiSEqC(0): Sending 1.3 Repeat Command: e0 10 38 f1
0
2006-04-11 15:40:06.437 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.479 DummyRec: Restart! Frames seen 324
2006-04-11 15:40:06.539 >>>>>>>>>> 0 <> 0
2006-04-11 15:40:06.572 DVB#0 Old Params: freq(12369000) type(QPSK)
2006-04-11 15:40:06.573 DVB#0 New Params: freq(12369000) type(QPSK)
2006-04-11 15:40:06.977 DummyRec: Restart! Frames seen 336
2006-04-11 15:40:07.375 dvbchannel.cpp:wait_for_backend: Status:
Signal,Carrier,FEC Stable,Sync,Lock,
2006-04-11 15:40:07.375 DVB#0 DVBChannel::Tune: Frequency tuning successful.
2006-04-11 15:40:07.530 DummyRec: Restart! Frames seen 348
2006-04-11 15:40:08.032 DummyRec: Restart! Frames seen 360
2006-04-11 15:40:08.585 DummyRec: Restart! Frames seen 372
2006-04-11 15:40:09.141 DummyRec: Restart! Frames seen 384
2006-04-11 15:40:09.639 DummyRec: Restart! Frames seen 396
2006-04-11 15:40:10.193 DummyRec: Restart! Frames seen 408
2006-04-11 15:40:10.700 DummyRec: Restart! Frames seen 420
2006-04-11 15:40:11.263 DummyRec: Restart! Frames seen 432
2006-04-11 15:40:11.816 DummyRec: Restart! Frames seen 444

On 4/11/06, Mark Buechler <mark.buechler at gmail.com> wrote:
>
> I think there's something more to this. The two channels I'm going between
> which effect this are 1 of two scenarios:
>
> 1. Both channels are on the same NIT, different transports (and differing
> tsid)
> 2. Both channels on different NITs with different transports with no
> common tsid in between (I use a rotor).
>
> Given #1, I can't agree with you in that the NIT has anything to do with
> this. It was #1 last night which prompted me to look into this problem
> because it was very reproducable at the time.
>
> - Mark.
>
>
> On 4/11/06, Daniel Kristjansson <danielk at cuymedia.net> wrote:
> >
> > On Tue, 2006-04-11 at 14:03 -0400, Mark Buechler wrote:
> > > BTW, when you say the zero version number is a coincidence, it's not
> > > that it's 0, it's that both multiplexes have the same version number.
> > > That is the cause behind the PAT never getting re-parsed after the
> > > first time.
> >
> > See the reply I just sent to Stuart's message. The version check
> > is not designed to check for transport changes. The users of the
> > class, in this case tv_rec and dvbsignalmonitor, are responsible
> > for resetting the class on transport changes, and resetting the
> > known PAT version on a channel mismatch. It looks like it is
> > doing this, but a PAT mismatch only happens when the MPEG program
> > number doesn't match the expected value. But the program number
> > is by no means unique across transports. Hence you need address
> > ticket #1049 to address this properly, fixing it will allow
> > monitoring the transportid, networkid and serviceid...
> >
> > -- Daniel
> >
> > _______________________________________________
> > mythtv-dev mailing list
> > mythtv-dev at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
> >
>
>
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